Reply With Quote#12=20 amp breakerOriginally Posted by whoazone
#14=15 amp breaker
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breaker size for 12 gauge wire
What is the largest breaker I should use on 12 gauge wire? How about 14 guage wire?
#12=20 amp breaker
#14=15 amp breaker
Yes I am A Pirate-Jimmy Buffett
Can 10 gauge wire handle a 30 amp breaker?
Basically, yes.
30 amp breaker with 10g wire is usually what is used for an electric water heater.
Mike
wires
Are you asking for a specific appliation, or just fishing for information?
If using ROMEX® those answers are correct but if its not ROMEX® it depends on the wire insulation type and if it needs to be derated.
Last edited by Terry; 12-07-2011 at 10:11 AM.
What are you talking about? Try reading 240.4(D)
Last edited by Terry; 12-07-2011 at 10:11 AM.
Yes my bad I don't know what I was thinking maybe flexible cords?
Breaker size for # 12 wire
You have not specified what type load and what type overcurrent protection is provided ie. (circuit breaker or fuse) the #12 conductor is supplying. If the circuit is supplying a motor load, the NEC allows a CB or Fuse rated greater than the conductor ampacity.
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